Parkers overall rating: 4.2 out of 5 4.2

Miles per pound (mpp) Miles per pound (mpp)

Petrol engines 2.6 - 2.9 mpp
Plug-in hybrid petrol engines 10.8 - 11.1 mpp
Low figures relate to the least economical version; high to the most economical. Based on WLTP combined fuel economy for versions of this car made since September 2017 only, and typical current fuel or electricity costs.
Based on "Weighted" mpg; figures depend on the proportion of miles driven in pure electric mode and may vary widely

Fuel economy

Petrol engines 19.2 - 21.7 mpg
Plug-in hybrid petrol engines 80.7 - 83.1 mpg
  • With premium cars come premium costs  
  • No longer a relatively frugal diesel option 
  • Plug-in hybrid best for company car tax

What are the running costs?

It goes without saying here that a Bentley tipping the scales at nearly three tonnes isn’t going to be cheap to run. It’s a case of relativity here, though. If you purchase a car priced well into six figures new, in theory you should also be able to afford to keep the thing on the road.

We’ll start with the the V8. Its figures make grim reading if you’re eco-minded, but then, we guess, green-minded people aren’t going to be looking at a new Bentley. Fuel consumption runs to 25mpg if driven gently. It’s helped considerably by cylinder de-activation technology – and in a week’s real-world testing, we slightly beat that figure, achieving 22.0mpg.

The Bentayga Hybrid has a 17.3kWh lithium-ion battery that gives an official all-electric range of up to 31 miles and can be charged in as little as 2.5 hours. With a mere 3.0-litre V6 under the bonnet, CO2 emissions are relatively parsimonious which means reasonably low BIK company car tax, although lesser SUVs such as the BMW X5 45e and Mercedes GLE 350de are in an even lower group.

On an 85-mile jaunt consisting mostly of motorway miles we averaged around 34mpg with a full battery. This figure would go up significantly if you were able to keep the engine switched off and run predominantly on battery power, something that’s more easily done if used mainly in urban environments.

Servicing and warranty

Bentleys come with a three-year unlimited mileage warranty.

It suggests regular maintenance and even offers a fixed price servicing scheme for cars over two years old. Interim services will set you back around £1,200, while smaller services are around £800. Bentley recommends servicing every 12 months or 10,000 miles.


  • Proving reliable in service
  • Technology used elsewhere
  • Great build quality and attentive dealers

With the complex engine options, you’d be forgiven for thinking the Bentley Bentayga’s reliability could be questionable, but the reality is it’s built using many parts from elsewhere in the Volkswagen Group (it’s based on the Audi Q7’s platform) so actually it should fare well. There haven’t been any significant recalls for the Q7 at all.

Furthermore, the build quality of the Bentayga feels exemplary. There were no indications of loose trim or rattles during our test drives.

Ongoing running costs

Road tax (12 months) £360 - £630
See tax rates for all versions
Insurance group 50
How much is it to insure?